#region License
/*
 * Copyright (c) 2007, Matthew Holmes
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice, this
 * list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * * Neither the name of The Mango Project nor the names of its contributors may be
 * used to endorse or promote products derived from this software without specific
 * prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Resources;
using System.Text;
using System.Windows.Forms;

using Mango.Framework.Common;

namespace Mango {
    public class ImageManager : IDisposable {
        #region Fields

        private ImageList m_ImageList = null;
        private ResourceManager m_ResMan = null;
        private Dictionary<string, int> m_ImageIdxMap = new Dictionary<string, int> ();
        private Dictionary<string, object> m_ResMap = new Dictionary<string, object> ();

        #endregion

        #region Constructors

        public ImageManager () {
            if (Singleton.HasRef<ImageManager> ()) {
                throw new InvalidOperationException ("ImageManager already created");
            }

            Singleton.Register<ImageManager> (this);
        }

        #endregion

        #region Properties

        private ResourceManager Manager {
            get {
                if (m_ResMan == null) {
                    m_ResMan = new ResourceManager ("Mango.Properties.Resources", this.GetType ().Assembly);
                }

                return m_ResMan;
            }
        }

        public ImageList ImageList {
            get {
                if (m_ImageList == null) {
                    m_ImageList = new ImageList ();
                    m_ImageList.ColorDepth = ColorDepth.Depth32Bit;
                    m_ImageList.ImageSize = new Size (16, 16);
                }

                return m_ImageList;
            }
        }

        #endregion

        #region Public Methods

        public int GetImageIndex (string name) {
            if (m_ImageIdxMap.ContainsKey (name)) {
                return m_ImageIdxMap[name];
            }
            else {
                Image img = GetImage (name);
                int idx = -1;
                if (img != null) {
                    ImageList.Images.Add (img);
                    idx = ImageList.Images.Count - 1;
                }
                else {
                    Icon icon = GetIcon (name);
                    if (icon != null) {
                        ImageList.Images.Add (icon);
                        idx = ImageList.Images.Count - 1;
                    }
                }

                if (idx != -1) {
                    m_ImageIdxMap[name] = idx;
                }

                return idx;
            }
        }

        public Icon GetIcon (string name) {
            object o = GetObject (name);
            if (o is Bitmap) {
                return Icon.FromHandle (((Bitmap)o).GetHicon ());
            }
            else {
                return (o as Icon);
            }
        }

        public Bitmap GetImage (string name) {
            object o = GetObject (name);
            if(o is Icon) {
                return ((Icon)o).ToBitmap ();
            }
            else {
                return (o as Bitmap);
            }
        }

        #endregion

        #region Private Methods

        private string PrepName (string name) {
            return name.Replace ('.', '_');
        }

        private object GetObject (string name) {
            name = PrepName (name);
            if (m_ResMap.ContainsKey (name)) {
                return m_ResMap[name];
            }
            else {
                return Manager.GetObject (name);
            }
        }

        #endregion

        #region IDisposable Members

        public void Dispose () {
        }

        #endregion
    }
}
